CVE-2026-47083 Details
Description
An issue was discovered in cyrus-imapd in Cyrus IMAP through 3.12.2. There is an ESEARCH cross-user content oracle. By using the ESEARCH command, an authenticated IMAP user could enumerate folder names under any account they could name. Search would return UIDs of messages matching the search, creating a content oracle (without allowing arbitrary reads of the target's content).
A cross-user content oracle vulnerability has been identified in Cyrus IMAP versions through 3.12.2. This issue allows an authenticated IMAP user to use the ESEARCH command to enumerate folder names under any account they can name. The search results would include UIDs of messages that match the search criteria, creating a content oracle effect without permitting arbitrary reads of the target's content.
Users can upgrade to Cyrus IMAP version 3.12.3, which addresses this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jul 16, 2026CISA-ADP
Assessed Jul 16, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://www.cyrusimap.org/3.12/imap/download/release-notes/3.12/x/3.12.3.html | [email protected] | Release NotesVendor |
| https://www.cyrusimap.org/imap/download/release-notes/index.html | [email protected] | Vendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-204 | Observable Response Discrepancy | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Cyrus IMAP | <= 3.12.2 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 16, 2026 | New CVE Received | [email protected] |
| Jul 16, 2026 | CVE Modified | CISA-ADP |
Volerion